The Rapid Assessment of Disease Activity in Rheumatology (Radar) Questionnaire
Article first published online: 9 DEC 2005
Copyright © 1992 American College of Rheumatology
Arthritis & Rheumatism
Volume 35, Issue 2, pages 156–162, February 1992
How to Cite
Mason, J. H., Anderson, J. J., Meenan, R. F., Haralson, K. M., Lewis-Stevens, D. and Kaine, J. L. (1992), The Rapid Assessment of Disease Activity in Rheumatology (Radar) Questionnaire. Arthritis & Rheumatism, 35: 156–162. doi: 10.1002/art.1780350206
- Issue published online: 9 DEC 2005
- Article first published online: 9 DEC 2005
- Manuscript Accepted: 20 AUG 1991
- Manuscript Received: 17 JAN 1991
- NIH. Grant Number: AR-20613
- Arthritis Foundation AHP Fellowship award
Objective. This study documents the measurement properties of a brief, self-administered questionnaire of disease signs and symptoms in patients with rheumatoid arthritis.
Methods. The Rapid Assessment of Disease Activity in Rheumatology (RADAR) questionnaire assesses joint pain/tenderness and clinical status. One hundred ninety-three pairs of RADAR forms were completed by 45 subjects and their assigned clinician evaluators.
Results. Subject—clinician agreement (intraclass correlation coefficients [ICC]) for joint pain/tenderness and clinical status ranged from 0.52 to 0.87 (P = 0.0001), with 83% ≥0.65. The ICC for change in joint scores over 6 months was 0.83 (P = 0.0001).
Conclusion. The 2-page RADAR questionnaire produces valid estimates of joint count and clinical status that are sensitive to change.